Ezurio 01B The Intelligent Bluetooth Serial Module Version II User Manual BISM2 Data Sheet v0 9

Ezurio Ltd The Intelligent Bluetooth Serial Module Version II BISM2 Data Sheet v0 9

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www.ezurio.com © Ezurio Ltd 2005 22. Features Feature Implementation Bluetooth Transmission Class 1 Fully Bluetooth pre-qualified Bluetooth 2.0 Range 250 metres typical (free space) Frequency 2.400 – 2.485 GHz Max Transmit Power +6dBm Min Transmit Power +0dBm Receive Sensitivity Better than -90dB Antenna Gain +2dBi Data Transfer rate Up to 250Kbps Serial Interface RS-232 bi-directional for commands and data using AT commands Serial parameters Default 9600,n,8,1 - Configurable from 9600bps. Support for DTR, DSR, DCD, RI, RTS, CTS Physical size 25 x 35 x 10 mm, 8g Current consumption Less than 36mA during data transfer with a configurable low power mode Low power sniff mode 2.5mA typ Temperature Range Normal operation: -40°C to +85°C Interface Levels 3.3V Audio Audio can be transferred over SCO channels through the PCM interface at 64kbps Profiles Server - SPP (Full), DUN, Audio Gateway, Headset, Handsfree Client - All RFCOMM based profiles Multipoint 7 slaves Field upgradeable Over UART Protocols UART Single point firmware is controlled and configured using AT Commands, multipoint firmware uses a simple packet based protocol and requires a host to enable the module to function effectively. Single point only allows a point to point connection where as multipoint allows up to 7 simultaneous connections. GPIO 8 x digital 2 x analogue Lead free Lead-free and RoHS compliant

www.ezurio.com © Ezurio Ltd 2005 33. Functional Block Diagram * GPIO lines are utilised for DTR, DCD, RI and LED, but can be re-assigned 3.1 Connection Diagram The Module is equipped with a 40-pin 0.5mm pitch board-to-board connector that connects to the application platform.

www.ezurio.com © Ezurio Ltd 2005 43.2 Pin Descriptions The Hirose DF12C board-to-board connector on the module is a 40-pin double-row receptacle. The table below defines the pin functions. Note that this pin-out is as viewed from the underside of the Module. Pin No. Signal Description Pin No. Signal Description 1 Analogue 0 1.8v Max 2 GPIO1 I/O for Host. 3 Analogue 1 1.8v Max 4 GPIO2 I/O for Host 5 SPI_MISO SPI bus serial O/P 6 UART_RI ‘Ring’ Input or Output 7 SPI_CSB SPI bus chip select I/P 8 UART_DCD Input or Output 9 SPI_CLK SPI bus clock I/P 10 UART_DSR Input 11 GND 12 GPIO3/UART_DTR I/O for Host 13 RESET Reset I/P 14 GPIO4 I/O for Host 15 GND 16 GPIO5 I/O for Host 17 SPI_MOSI SPI bus serial I/P 18 GND 19 UART_CTS Clear to Send I/P 20 PCM_CLK PCM Clock I/P 21 UART_TX Transmit Data O/P 22 PCM_IN PCM Data I/P 23 UART_RTS Request to Send O/P 24 PCM_SYNC PCM Sync I/P 25 UART_RX Receive Data I/P 26 PCM_OUT PCM Data O/P 27 VCC_3V3 3.3V Output (Note 3) 28 N/C 29 VCC_5V 3.6V < VIN < 6.0V 30 GND 31 N/C 32 RESERVED Do not connect 33 GPIO6 I/O for Host 34 RESERVED Do not connect 35 GPIO7 I/O for Host 36 GND 37 GPIO8 I/O for Host 38 GND 39 RESERVED DO NOT CONNECT 40 N/C Notes: UART_RX, UART_TX, UART_CTS, UART_RTS, UART_RI, UART_DCD and UART_DSR are all 3.3v level logic. For example, when RX and TX are idle they will be sitting at 3.3V. Conversely for handshaking pins CTS, RTS, RI, DCD, DSR a 0v is treated as an assertion. Pin 6 (UART_RI) is active low. It is normally 3.3v. When a remote device initiates a connection, this pin goes low. This means that when this pin is converted to RS232 voltage levels it will have the correct voltage level for assertion. Pin 8 (UART_DCD) is active low. It is normally 3.3v. When a connection is live this pin is low. This means that when this pin is converted to RS232 voltage levels it will have the correct voltage level for assertion. Pin 10 (UART_DSR) is an input, with active low logic. It should be connected to the DTR output of the host. When the BISM2 Module is in high speed mode (See definition for S Register 512), this pin should be asserted by the host to ensure that the connection is maintained. A deassertion is taken to mean that the connection should be dropped, or an online command mode is being requested. The GPIO pins can be accessed using S Registers 621 to 625. GPIO4 and GPIO5 are also connected to LEDs on the module. If these I/O pins are set for input, then the LED will be driven by the host and

www.ezurio.com © Ezurio Ltd 2005 5appropriate drive current requirements must be satisfied. By default GPIO4 is used to drive the right LED which indicates connection status. A Logic 1 switches on the LED. GPIO3 is used for DTR output (active low). Analogue 0 and 1 should not exceed 1.8v and S Registers 7xx are used to access them. 3.3 Electrical Specifications 3.3.1 Absolute Maximum ratings Absolute maximum ratings for supply voltage and voltages on digital and analog pins of the Module are listed below; exceeding these values will cause permanent damage. Parameter Min Max Unit Peak current of power supply 0 100 mA Voltage at digital pins -0.3 3.7 V Voltage at POWER pin 3.3 7 V 3.3.2 Recommended Operating Parameters 3.3.2.1 Power Supply Signal Name Pin No I/O Signal level Comments Vcc 29 I 3.6V to 6V Ityp = 50mA GND 11, 15, 18, 30, 36, 38 6 Ground terminals to be attached in parallel VCC_1V8 39 O 1.8V typical For monitoring only. No current source VCC_3V3 27 O 3.3V typical For monitoring only. No current source 3.3.2.2 RS-232 Interface Signal Name Pin No I/O Signal level Comments UART_TX 21 O VOLmax=0.2V VOHmin=2.8V UART_RX 25 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V UART_CTS 19 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V UART_RTS 23 O VOLmax=0.2V VOHmin=2.8V UART_DSR 10 I VILmax=0.8V

www.ezurio.com © Ezurio Ltd 2005 6VIHmin=2.10V VIHmax=3.7V UART_DTR 12 O VOLmax=0.2V VOHmin=2.8V Shared with GPIO3 UART_RI 6 I or O O/P : VOLmax=0.2V VOHmin=2.8V I/P : VILmax=0.8V VIHmin=2.10V VIHmax=3.7V Direction may be programmed. UART_DCD 8 I or O O/P : VOLmax=0.2V VOHmin=2.8V I/P : VILmax=0.8V VIHmin=2.10V VIHmax=3.7V Direction may be programmed. 3.3.2.3 SPI Bus Signal Name Pin No I/O Signal level Comments SPI_MOSI 17 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V Used to reprogram Flash SPI_MISO 5 O VOLmax=0.2V VOHmin=2.8V SPI_CSB 7 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V SPI_CLK 9 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V 3.3.2.4 PCM Interface Signal Name Pin No I/O Signal level Comments PCM_CLK 20 I or O O/P : VOLmax=0.2V VOHmin=2.8V I/P : VILmax=0.8V VIHmin=2.10V VIHmax=3.7V If unused keep pins open PCM_IN 22 I VILmax=0.8V VIHmin=2.10V VIHmax=3.7V PCM_SYNC 24 I or O O/P : VOLmax=0.2V

www.ezurio.com © Ezurio Ltd 2005 7 VOHmin=2.8V I/P : VILmax=0.8V VIHmin=2.10V VIHmax=3.7V PCM_OUT 26 O VOLmax=0.2V VOHmin=2.8V 3.3.2.5 General Purpose I/O and ADC Signal Name Pin No I/O Signal level Comments GPIO 1 - 5 2,4,12, 14,16 I or O O/P : VOLmax=0.2V VOHmin=2.8V I/P : VILmax=0.8V VIHmin=2.10V VIHmax=3.7V AIO_0, AIO_1 1, 3 I/O Vout max=VDD_PIO-.3 Vout min=VDD_PIO 3.3.2.6 Miscellaneous Function Signal Name Pin No I/O Signal level Comments Reserved USB D- 32 I VILmax =0.3vdd_pads VIHmin =0.7Vdd_pads Normally inactive. Pull to GND through 10K Reserved USB D+ 34 I VILmax =0.3vdd_pads VIHmin =0.7Vdd_pads Normally inactive. Pull to GND through 10K Reset RESET 13 I VDD falling threshold=1.5V typ VDD rising threshold=1.6V typ

www.ezurio.com © Ezurio Ltd 2005 84. I/O Characteristics 4.1 Power Consumption The current drain from the Vcc power input line is dependent on various factors. The three most significant factors are the voltage level at Vcc, UART Baudrate and the operating mode. The hardware specification for the Module allows for a voltage range of 3.6 to 6.0 at Vcc. Tests have shown that there is no significant difference in current draw when Vcc is 5 or 6V. Therefore the data presented below, pertains to Vcc levels of 3.6 and 5v only. Tests have shown that where power drain is an issue, it is best to keep Vcc at the lower end of the range. The UART baudrate has a bearing on power drain because as is normal for digital electronics, the power requirements increase linearly with increasing clocking frequencies. Hence higher baudrates result in a higher current drain. Finally with regards to operating mode the significant modes are; idle, waiting for a connection, inquiring, initiating a connection, sniff and connected. With connected mode, it is also relevant to differentiate between no data being transferred and when data is being transferred at the maximum rate possible. The AT command Set document describes how to configure the Module for optimal power performance. 4.1.1 Typical Current Consumption in mA Baudrate 9600 38400 115200 460800 3.6v 1.60 1.80 1.96 3.00 Idle Mode, S512=1 5.0v 2.00 2.10 2.30 3.40 3.6v 59.00 59.00 59.00 59.00 Wait for Connection Or Discoverable Mode, AT+BTP S508=S510=640, S509=S511=320 5.0v 65.00 65.00 65.00 65.00 3.6v 2.75 2.94 3.10 4.12 Wait for Connection Or Discoverable Mode, AT+BTP S508=S510=1000, S509=S511=11* 5.0v 3.26 3.36 3.55 4.63 3.6v 50.00 50.00 50.00 50.00 Inquiring Mode, AT+BTI 5.0v 54.00 54.00 54.00 54.00 3.6v 50.00 50.00 50.00 50.00 Connecting Mode (ATDxxx) 5.0v 54.00 54.00 54.00 54.00 3.6v 6.00 6.10 6.40 7.20 Connected Mode (No Data Transfer) 5.0v 7.20 7.20 7.40 8.20 3.6v 21.50 22.50 24.50 32.50 Connected Mode (Max Data Transfer) 5.0v 24.50 26.00 28.00 36.00 * Note: calculated figures 4.2 Interface Pins To be supplied

www.ezurio.com © Ezurio Ltd 2005 95. DC Characteristics 5.1 RF Performance 5.1.1 Transmit Power Conducted Transmit Power min: 1.0mW (0dBm) max: 4mW (6dBm) Antenna Gain +2dBi typ. Effective Transmit Power min: 0dBm max Max: +6dBm 5.1.2 Receive Sensitivity Receive Sensitivity -86dBm (at 25°C) Antenna Gain +2dBi typ Effective Receive Sensitivity -88dBm (at 25°C) 5.1.3 RF Performance Data Receive Sensitivity-100-90-80-70-60-50-40-30-20-100-40 deg -20 deg 0 deg 20 deg 40 deg 60 deg 80 deg 100 degTemperature Deg. C.Attenuation Setting dBmNOTE: Measured as attenuation required to achieve better than 0.1% BER 5.2 Range See the Data Transfer Rate vs distance graph below. The data throughput of the Module is limited to 280Kbps by the parsing of the data being transferred through the AT command processor. The graph below shows the typical data thoughput with and without the AT command processing. Distances are measured in free space between 2 Modules.

www.ezurio.com © Ezurio Ltd 2005 10Data Transfer Rate / Distance010020030040050060070080010m 50m 100m 150m 200m 250m 300mDistance (meters)Data Transfer Rate (kbps)RF data rate Serial port data rate 5.3 Temperature Performance Data Transmit Rate with Temperature and Attenuation0100200300400500600700800-60dBm -65dBm -70dBm -75dBm -80dBm -85dBm -90dBmdBm attenuationData Transmission Rate kbs-40 deg-20 deg0 deg20 deg40 deg60 deg80 deg100 deg

www.ezurio.com © Ezurio Ltd 2005 116. Functional Description The BISM2 Bluetooth module is a self-contained Bluetooth product and requires only power to implement full Bluetooth communication. The integrated, high performance antenna together with the RF and Base-band circuitry provides the Bluetooth wireless link and the UART interface provides a connection to the host system. The variety of interfaces and the AT command set allow the BISM2 module to be used for a wide number of short range wireless applications, from simple cable replacement to complex multipoint applications, where multiple radio links are active at the same time. The complexity and flexibility of configuration are made simple for the design engineer by the integration of a extremely comprehensive set of AT commands, supplemented with a range of “S” registers which are used for non=volatile storage of system parameters. These are fully documented in the “Blu2i AT Command Reference Manual”. To provide the widest scope for integration a range of different physical host interfaces are provided: 6.1 Interfaces 6.1.1 UART interface UART_TX, UART_RX, UART_RTS and UART_CTS form a conventional asynchronous serial data port. The interface is designed to operate correctly when connected to other UART devices such as the 16550A. The signalling levels are nominal 0V and 3.3V and are inverted with respect to the signalling on an RS232 cable. The interface is programmable over a variety of bit rates; no, even or odd parity; stop bit and hardware flow control. The default condition on power-up is pre-assigned in the external Flash. Two-way hardware flow control is implemented by UART_RTS and UART_CTS. UART_RTS is an output and is active low. UART_CTS is an input and is active low. These signals operate according to normal industry convention. By writing different values to the S register the UART_RI can be continuously polled to detect incoming communication. The UART_RI signal serves to indicate incoming calls. UART_DSR is an active low input. It should be connected to DTR output of the host. When the module is running in high speed mode (See definition for S Reg 512), this pin should be asserted by the host to ensure connection is maintained. A de-assertion is taken to mean that the connection should be dropped, or an online command mode is being requested. The module communicates with the customer application using the following signals: RS-232 Port /TXD @ application sends data to the module’s UART_RX signal line Port /RXD @ application receives data from the module’s UART_TX signal line Figure 6.1 : UART interfaces Serial Module UART Interface UART_TX UART_RX UART_CTS UART_RTS UART_DTS Application /RXD /TXD /RTS /CTS /DTR RS232 Interface

www.ezurio.com © Ezurio Ltd 2005 12 6.1.2 SPI bus The Module is a slave device that uses terminals SPI_MOSI, SPI_MISO, SPI_CLK and SPI_CSB. This interface is used for program firmware update. Note: The designer should be aware that no security protection is built into the hardware or firmware associated with this port, so the terminals should not be permanently connected in a PC application. 6.1.3 GPIO Port Eight lines of programmable bi-directional input/outputs (I/O) are provided that can be accessed either via the UART port, or Over The Air from a second Bluetooth unit. These can be used as data inputs or to control external equipment. By using these in OTA mode, a BISM21 module can be used for control and data acquisition without the need for any additional host processor. Each of the GPIO[1:8] ports can be independently configured to be either an Input or Output. A selection of ports can be accessed synchronously. GPIO 1 and 2 can be configured as event counters. The ports are powered from VCC. The mode of these lines can be configured and the lines are accessed via S Registers 621 to 625. Low latency I/O can be accessed by using Ezurio’s I/O via enquiry process. 6.1.4 PCM CODEC Interface PCM_OUT, PCM_IN, PCM_CLK and PCM_SYNC carry up to three bi-directional channels of voice data, each at 8ksamples/s. The format of the PCM samples can be 8-bit A-law, 8-bit µ-law, 13-bit linear or 16-bit linear. The PCM_CLK and PCM_SYNC terminals can be configured as inputs or outputs, depending on whether the module is the Master or Slave of the PCM interface. The Module is compatible with the Motorola SSI TM interface and interfaces directly to PCM audio devices including the following: 6.1.4.1 Compatible Codec Chips • Qualcomm MSM 3000 series and MSM 5000 series CDMA baseband devices • OKI MSM7705 four channel A-law and µ-law CODEC • Motorola MC145481 8-bit A-law and µ-law CODEC • Motorola MC145483 13-bit linear CODEC 6.1.5 ADC The BISM2 provides access to two 8-bit ADCs are available. These provide a range o 0mV to 1,800mV, which can be read using the S registers 701 and 702. Suitable external scaling and over-voltage protection should be incorporated in your design. 6.1.6 Pass Through Serial To be supplied

www.ezurio.com © Ezurio Ltd 2005 14The complexity of the AT command set developed by Ezurio is such that most Bluetooth functionality can be covered, greatly reducing development time. To provide additional functionality a range of “S” registers has been implemented. These allow program settings to be stored to control the BISM2 function and also give access to configuring and reading ports and status registers within the BISM2. Full details of the AT command set are provided in the Blu2i AT Command Reference Manual. 7.3.1 AT features at a glance 7.3.1.1 General • Configure two modules to automatically connect and transfer data, audio or a combination of data and audio when both devices are powered. • Automatically re-connect devices when a connection is dropped. • Remotely access the AT parser of the remote unit from a master device to perform Over The Air (OTA) configuration. • Configure the module to enter a state on power up and after a period of time change to another state automatically • Read and write to GPIO lines • Read the ADC channels • Get fast GPIO status through an inquiry response (patent pending) 7.3.1.2 Audio • Set up audio connections • Enable / disable Auto Answer for incoming connections 7.3.1.3 UART • Change the baud rate from 1200 to 961,200 baud. • Use the DSR line to drop connections • Configure as DTE or DCE • Change escape sequence character • Change the number of Stop bits and Parity • Enable or disable echoes 7.3.1.4 Security • Enable Authentication by requiring a PIN code for incoming AND / OR outgoing connections • Enable data to be encrypted over the air for incoming AND / OR outgoing connections. The module can be configured to be: non-connectable and non-discoverable, non-connectable but discoverable, connectable but non-discoverable, connectable and discoverable. • Automatically store Paired devices in a trusted device database in the flash memory 7.3.1.5 Bluetooth • Set the module to be a master or slave • Make a Bluetooth connection to a specified device • Perform a full inquiry for other Bluetooth devices • Query a remote device to check if a service is offered • Fetch the friendly name of a remote device

www.ezurio.com © Ezurio Ltd 2005 15• Increase or decrease the delay before the master abandons a connection attempt • Change the device class code • Set the device’s friendly name • Change the Inquiry scan time • Change number of returned devices from an inquiry scan • Obtain the RSSI value for a connection 7.3.1.6 Power Management • Decrease or increase the output power to suit your connection range • Configure the modules to work in Sniff and other low power modes. 7.4 Multipoint Firmware The Module consists of the same hardware as that used for the single point ‘AT’ blu2i module described elsewhere. Whereas the latter only allows one-to-one connection, the module described here allows simultaneous connections to a minimum of 3 slaves, and depending on hardware build, up to 7 slaves. It also allows connections to multiple profiles to one or more slaves. Hence this document adopts a concept of channels instead of slave connections. The term ‘host’ in this document is taken to mean any entity which is a source of command messages, sink for response/event messages and both source and sink for multiplexed data packets. 7.5 OTA (Over the Air) Configuration When the BISM2 is placed in slave mode it’s settings can be remotely controlled by a master unit. This places the slave unit’s AT parser in remote mode providing over the air configuration. This mode is of use for remote sensor applications, where no host processor is required to control the slave Bluetooth unit. 7.6 Bootmodes The module has the capability of booting into 1 of 8 modes. These will be supported in future releases of firmware and selected via an S Register. Boot Mode 1 is default and gives functionality equivalent to the BISM1 module. These modes will specify different PSKEY settings to allow for different basic operation. Please contact Ezurio for further information. 8. Low Power Modes The current drain from the Vcc power input line is dependent on various factors. The three most significant factors are the voltage level at Vcc, UART baud rate and the operating mode. The hardware specification for the blu2i module allows for a voltage range of 3.6 to 6.0v at Vcc. Tests have shown that there is no significant difference in current draw when Vcc is 5 or 6V. Therefore the data presented below, pertains to Vcc levels of 3.6 and 5v only. Tests have shown that where power drain is an issue, it is best to keep Vcc at the lower end of the range. The UART baud rate has a bearing on power drain because as is normal for digital electronics, the power requirements increase linearly with increasing clocking frequencies. Hence higher baud rates result in a higher current drain.

www.ezurio.com © Ezurio Ltd 2005 16Finally with regards to operating mode the significant modes are; idle, waiting for a connection, inquiring, initiating a connection and connected. With connected mode, it is also relevant to differentiate between no data being transferred and when data is being transferred at the maximum rate possible. The operating mode can best be described by stating the AT commands required to enter that mode. In addition, there are certain S Registers which have a direct impact on power consumption, which are described next. The blu2i Module has 2 LEDs which can be configured to display connection status. One led is used to display connection status, while the other is used to either display ‘Ring Indicate’ status or follow the state of the incoming DSR line on the UART interface. Tests have shown that these LEDs can consume up to 5.3mA which is more than double the current draw when in Idle mode. Therefore S Registers 533 and 534 can be used to completely disable these indications. Finally S Registers 508 to 511, which specify the page and inquiry scan intervals and windows, can be used to adjust the average current drain when in discoverable and or connectable modes. Registers 508 and 509 specify the interval and window for page scans and registers 510 and 511 specify the interval and window for inquiry scans. Register pairs 508/509 and 510/511 describe duty cycles when the blu2i module goes into scan modes. It is while scanning that the highest current draw occurs. The average current draw is determined by simple arithmetic using the values stored in the 508/509 and 510/511 register pairs. The operating modes described above are entered using AT commands as follows Idle On power up, with S Register 512 = 1 Wait for Connection AT+BTG (100% page scan duty cycle) Discoverable Only AT+BTQ (100% inquiry scan duty cycle) Connecting ATD Connected No Data Connected Max data transfer All current consumption values in the table below assume that the connection status indication functionality of the LED has been disabled by setting S Registers 533 and 534 to 0. Baud rate 9,600 38,400 115,200 460,800 3.6V 1.60 1.80 1.96 3.00 Idle Mode, S512=1 5.0V 2.00 2.10 2.30 3.40 3.6V 59.00 59.00 59.00 59.00 Wait for Connection Or Discoverable Mode, AT+BTP S508=S510=640, S509=S511=320 5.0V 65.00 65.00 65.00 65.00 3.6V 2.75 2.94 3.10 4.12 Wait for Connection Or Discoverable Mode, AT+BTP S508=S510=1000, S509=S511=11 5.0V 3.26 3.36 3.55 4.63 3.6V 50.00 50.00 50.00 50.00 Inquiring Mode, AT+BTI 5.0V 54.00 54.00 54.00 54.00 3.6V 50.00 50.00 50.00 50.00 Connecting Mode (ATDxxx) 5.0V 54.00 54.00 54.00 54.00 3.6V 6.00 6.10 6.40 7.20 Connected as Master Mode (No Data Transfer) Sniff NOT activated 5.0V 7.20 7.20 7.40 8.20

www.ezurio.com © Ezurio Ltd 2005 173.6V 21.50 22.50 24.50 32.50 Connected as Master Mode (Max Data Transfer) Sniff NOT activated 5.0V 24.50 26.00 28.00 36.00 Connected as Slave Mode (No Data Transfer) 5.0V 32.00 33.00 33.50 34.00 Connected as Slave Mode (No Data Transfer) Sniff Enabled (AT&F1 setting) 5.0V 4.90 All current values are in milliamps (mA). As can be seen, the current drain while waiting for a connection or discoverable mode is about 30 times higher than in idle mode. This is when the page/inquiry scan duty cycle is 100%. These modes give the quickest response to a page or inquiry request from a remote peer. It is possible to reduce the duty cycle down to as low as 0.5% at the expense of response time. The response time can be specified via S Registers 508 and 510 for page and inquiry respectively, where the worst case response time can be as high as 2.5 seconds. Then the duty cycle can be varied by changing the value of S Registers 509 and 511 appropriately. For example, if S Register 508 and 510 are both set to 1000ms and S Register 509 and 511 are both set to 11ms then the duty cycle is reduced to 1%, this means that average current drain at 5.0v will be 2% of 65mA plus the normal idle mode current, that is, it is as low as 2.75mA. However, in this case, it can take up to 1 second to establish a connection. The connected state current consumption while a master or slave can be considerably reduced by enabling Sniff mode, described in detail in the next section. 8.1 Low Power Modes using Sniff Bluetooth connections are master/slave in nature. A master sends packets and a slave has to acknowledge that packet in the next timeslot. Timeslots in Bluetooth are 625 microseconds wide. This implies that a master will always know when packets will be sent and received, which further means it is able to optimise power usage by switching on power hungry circuitry only when needed. A slave on the other hand does NOT have prior knowledge of when a packet will be received and has to assume that a packet will be received from a master on every receive slot. This means that it has to leave its receiving circuitry on for most of the receive slot duration. The result of this is high power consumption as illustrated in the power table above, where a slave with no data transmission still consumes around 31mA whereas a master consumes only 6mA. This problem was identified very early in the evolution of Bluetooth (especially since headsets spend all their time as a slave in a Bluetooth connection) and it was solved by having a mode called Sniff, with appropriate lower layer negotiating protocol. Sniff mode during connection is basically an agreement between the slave and its master that data packets will only be exchanged for N timeslots every M slots. The slave can then assume that it will never be contacted during N-M slots, and so can switch its power hungry circuitry off. The specification goes further by also specifying a third parameter called ‘timeout’ (T) which specifies ‘extra’ timeslots that the slave will agree to listen for after receiving a valid data packet. Put another way, if a data packet is received by the slave, then it knows that it MUST carry on listening for at least T more slots. If within that T slot time period another data packet is received, then the timer is restarted. This mechanism ensures low power consumption when there is no data transfer – at the mA 3.6V 3.20 Current per LED (when fitted) 5.0V 5.30

www.ezurio.com © Ezurio Ltd 2005 18expense of latency. When there is a lot of data to be transferred, it acts as if sniff mode were not enabled. It is stated above that during sniff mode, a slave listens for N slots every M slots. The Bluetooth specification states that a master can have up to 7 slaves attached to it with all slaves having requested varying sniff parameters. It may therefore be impossible to guarantee that each slave gets the M parameter it requested. In light of this, the protocol for enabling sniff mode specifies that a requesting peer specify the M parameter as a minimum and maximum value. This will allow the master to interleave the sniff modes for all slaves attached. For this reason, the sniff parameters are specified in the BISM2 module via four S registers. S Register 561 is used to specify ‘N’, S Register 562 is used to specify ‘T’ and S Registers 563/564 are used to specify minimum ‘M’ and maximum ‘M’ respectively. Although the specification defines these parameters in terms of timeslots, the S register values have to be specified in units of milliseconds and the firmware does the necessary translation to timeslots. Error! Objects cannot be created from editing field codes. 9. Application Examples 9.1 RS232 Modem Signals Just as a telephony modem has control and status lines, the blu2i Module also provides for 6 control and status lines as per the table below. The direction column is as seen from the module’s viewpoint. Direction Function IN or OUT CI also known as RI (Ring Indicate) IN or OUT DCD (Data Carrier Detect) IN DSR (Data Set ready) OUT DTR (Data Terminal Ready) IN CTS (Clear to Send) OUT RTS (Request to Send) The first four lines are under program control. These use four of the GPIO pins and are mapped to I/O as per the table below. The last two are under control of the UART driver and their functionality is always enabled. PIO Pin Direction Connector Pin Label Function 0 IN/OUT GPIO1 General Purpose I/O 1 IN/OUT GPIO2 General Purpose I/O 2 IN/OUT UART_RI Input/Output from module 3 IN/OUT UART_DCD Input/Output from module 4 IN UART_DSR Input to Module 5 IN/OUT GPIO3/UART_DTR General Purpose I/O (or DTR functionality) 6 IN/OUT GPIO4 General Purpose I/O (Right LED) 7 IN/OUT GPIO5 General Purpose I/O (Left LED)

www.ezurio.com © Ezurio Ltd 2005 20AT&F ATS512=1 ATS504=1 ATS507=2 ATS530=2000 AT&W AT+BTR<bdaddr_s> The ATS507=2 setting puts the device in DSR drop mode only. This means that when the device needs to be reconfigured, deasserting the DSR line will ensure that the module responds quickly to AT commands. This further means that in stand alone mode, the DSR input line MUST be asserted e.g. 0V in TTL signal mode. The slave is configured by: AT&F ATS512=4 ATS0=-1 AT&W AT+BTR<bdaddr_m> Where <bdaddr_m> is optional. If it is not specified, then the slave unit will accept connections from any device. If specified then only connections from the device specified will be accepted. If it is desired that the slave unit should not be discoverable (the master is by default not discoverable), then the configuration commands are: AT&F ATS512=3 ATS0=-1 AT&W AT+BTR<bdaddr_m> Where <bdaddr_m> is optional. If it is not specified, then the slave unit will accept connections from any device. If specified then only connections from the device specified will be accepted. When the units are next power cycled, the slave unit will wait for the master to connect to it and the master will continually look for the slave. If a connection attempt fails, the master will wait for 2 seconds before reattempting a connection. This 2 second delay can be varied by issuing it an ATS530 command with an appropriate value in the range 100ms to 15000ms. IMPORTANT NOTE: When S Register 507 = 0, the DSR input to the module MUST be asserted for the auto connection to succeed. When operating at TTL levels a 0V is seen as an assert state. When operating at RS232 levels and voltage greater than 3V is seen as assert. It is usual to connect the DTR line of the host to the DSR line of this device. 9.4 Audio Cable (voice) With a pair of these modules it is possible to replace a mono audio cable with two way traffic. That is, a setup where a microphone is connected to a speaker at the remote end and vice versa. So this mode effectively replaces two audio cables. Assuming the Bluetooth address of the master to be <bdaddr_m> and that of the slave to be <bdaddr_s>, the master module is configured by sending it the following AT commands: AT&F ATS512=1 ATS504=1

www.ezurio.com © Ezurio Ltd 2005 21ATS530=2000 ATS532=1 AT&W AT+BTR<bdaddr_s> And the slave is configured by: AT&F ATS512=4 ATS0=-1 AT&W AT+BTR<bdaddr_m> 9.5 Modem Control and Status Signals A serial port has DTR, DSR, RTS, CTS, DCD and RI control lines. RTS and CTS are locally controlled to prevent local buffer overflow. However the status of DTR, DRS, DCD and RI can be exchanged with the remote peer device. If for example, the DTR/DSR lines are to be exchanged between the two peers to simulate the performance of a physical cable, then it is possible to do so. Refer to the description for S Registers 551, 552 and 553 for more details.

www.ezurio.com © Ezurio Ltd 2005 2210. Application Information 10.1 Antenna Position The antenna used on the BISM2 Bluetooth module is designed to be largely immune from the effects of proximity detuning. Normally, antennas operating at 2.4GHz are affected by their surroundings, so that great care is needed in their placement and orientation. The BISM2 can be used in most locations and orientations and is only marginally affected by the presence of a significant ground plane in close proximity. The antenna distribution is close to isotropic, which means that the orientation of mounting has only a limited effect on the overall range. However the optimum range is achieved when the two antennae are directly facing each other The module should not be located in a sealed metal enclosure, as this will act as a Faraday cage and prevent the radio signal from penetrating. 10.2 Power Supply Considerations The power supply for the Module has to be a single voltage source of Vcc within the range of 3.3 V to 6.0 V. It must be able to provide sufficient current in a transmit burst. This can rise to 65mA. The Module includes regulators to provide local 3.3V. This rail is accessible on connector J2 for monitoring purposes only. Under no circumstances should this pin be used to source current. Power (Vcc) can be provided via the board-to-board connector Pin 29 on J2. 10.3 Power-On-Reset (Power Cycling and Brown Out considerations). The Module is provided with an active low reset pin (Hirose 40way DF12C connector pin 13). Upon the application of power, the Power On Reset circuit built into the Module will ensure that the unit starts correctly. There is no need for an external power reset monitor. 10.4 Mounting the Module onto the application platform There are many ways to properly install the Module in the host device. An efficient approach is to mount the PCB to a frame, plate, rack or chassis. Fasteners can be M1.8 or M2 screws plus suitable washers, circuit board spacers, or customized screws, clamps, or brackets in 2.2mm diameter holes. Note that care should be taken to ensure the head of the fixing does not interfere with the circuit. Nylon fixings are recommended. In addition, the board-to-board connection can also be utilized to achieve better support. The antenna (Brown square component on top side of PCB) must not be influenced by any other PCBs, components or by the housing of the host device. The proximity of the antenna to large metallic objects can affect the range and performance of the system. Designers should carefully consider the location of the Module and the type of enclosure material that is used. To prevent mechanical damage, be careful not to force, bend or twist the Module. Be sure it is positioned flat against the host device.

www.ezurio.com © Ezurio Ltd 2005 2311. Board to Board Connector This chapter provides specifications for the 40-pin board-to-board connector which serves as physical interface to the host application. The receptacle assembled on the Module is Hirose type DF12C. Details are available at: http://www.hirose.co.jp/cat2002e/500/e53700036.pdf 11.1 Stacking Height Mating headers from Hirose are available in different stacking heights, allowing the spacing between the BISM2 and carrier pcb to be changed from 3.5mm to 5.0mm. Notes: The headers listed above are without boss and metal fitting. 11.2 Hirose Connector general specification Parameter Specification (40 pin Board to Board connector) Number of Contacts 40 Quantity delivered 2000 Connectors per Tape & Reel Voltage 50V Current Rating 0.5A max per contact Resistance 0.05 Ohm per contact Dielectric Withstanding Voltage 500V RMS min Operating Temperature -45°C...+125°C Contact Material phosphor bronze (surface: gold plated) Insulator Material PA , beige natural Stacking height 3.0 mm ; 3.5 mm ; 4.0 mm ; 5.0 mm Insertion force 21.8N Withdrawal force 1st 10N Withdrawal force 50th 10N Maximum connection cycles 50 Item Part number Stacking height HRS number Receptacle on Module DF12C-40DS-0.5V(81) 3.5 mm – 5 mm CL537-0007-7- Headers DF12 series DF12(3.5)-40DP-0.5V(81) 3.5 mm CL537-0032-4-** DF12(4.0)-40DP-0.5V(81) 4.0 mm CL537-0057-5-** DF12(5.0)-40DP-0.5V(81) 5.0 mm CL537-0157-0-**

www.ezurio.com © Ezurio Ltd 2005 2412. Qualification 12.1 Bluetooth Qualification Process The following safety precautions must be observed during all phases of the operation, usage, service or repair of any application incorporating this Module. Manufacturers of the RF equipment are advised to convey the following safety information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product. Failure to comply with these precautions violates safety standards of design, manufacture and intended use of the product. Ezurio assumes no liability for customer failure to comply with these precautions. 12.2 Safety Information: Switch off the Bluetooth device before boarding an aircraft. Make sure it cannot be switched on inadvertently. The operation of wireless appliances in an aircraft is forbidden by many airlines to prevent interference with communications systems. Applications that could result in use on aircraft should carry appropriate warnings. 12.3 Qualifications 12.3.1 RF approvals The Module is listed as a Bluetooth Product in terms of the Bluetooth SIG Program Reference Document (PRD). This means that it can be integrated into end products without further testing or approval listing. The manufacturer must state the Ezurio part number and product reference in his literature in order to meet the requirements of the Bluetooth and regulatory approvals. A list of the countries where the Module is approved will be provided by Ezurio as required. As a minimum the product is listed in Europe and USA. Ezurio assumes no liability for customer failure to comply with national RF approvals. 12.3.1.1 Radio. R&TTE EN 300 328-2 V1.1.1 (2000-07) EN 301 489-1 V1.3.1 (2001-09) 12.3.1.2 EMC Emissions. FCC15B Class B EN55022 Class B 12.3.1.3 EMC Immunity. EN55024 Class 12.3.1.4 Environmental. EN301 489-1 V1.3.1 (2001-09) 12.3.1.5 Medical EN60601-1-2 12.3.1.6 Automotive Emission test to 95/54/EC

www.ezurio.com © Ezurio Ltd 2005 2512.4 Safety and Regulatory Statements 12.4.1 Europe – EU Declaration of Conformity DECLARATION OF CONFORMITY In accordance with Annex IV of the EU directive 1999/5/EC Notified Body consulted: Phoenix Test-Lab ID-Number of Notified Body: 0700 declare under our responsibility that the blu2i Module complies with the appropriate essential requirements of the Article 3 of the R&TTE and the other relevant provisions, when used for its intended purpose. Health and Safety requirements contained in Article 3 (1) a) EN 60 950: 1992 Safety of information technology equipment + Amendment A1:1993, Amendment A2:1993, Amendment A3:1995, Amendment A4:1997, Amendment A11:1997 EN 50371: Generic standard to demonstrate the compliance of low-power electronic and electrical apparatus with the basic restrictions related to human exposure to electromagnetic fields (10 MHz - 300 GHz)– General public Protection requirements with respect to electromagnetic compatibility Art.3 (1) b) EN 301489-17 V1.1.1 (09-2000), Electromagnetic Compatibility and radio spectrum Matters (ERM); Electro Magnetic Compatibility (EMC) standard for radio equipment and services; Part 17: Specific conditions for wideband data HiperLAN equipment Means of the efficient use of the radio frequency spectrum EN 300328-2 V1.2.1 (11-2001), Radio Equipment and Systems (RES); Wideband transmission systems; Technical characteristics and test conditions for data transmission equipment operating in the 2,4 GHz ISM band and using spread spectrum modulation techniques. Part 2: Harmonized EN covering essential requirements under article 3(2) of theR&TTE directive. Ezurio Ltd tel: +44 (0)20 8938 1000 Unit 2, 126 Colindale Avenue, Colindale fax: +44 (0)20 8905 8608 Registered in England London NW9 5HD, United Kingdom www.ezurio.com No. 5178293

www.ezurio.com © Ezurio Ltd 2005 2612.4.2 FCC and Industry Canada Statements This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 13. Environmental 13.1 Operating temperatures 13.2 Storage temperature 13.3 Reliability Parameter Test Comment Thermal Shock 200 cycles -40ºC /+85ºC 30 min 1 cycle/hour Vibration Continuous operation at 60 Hz, 2mm stroke 15g max sine wave, 12 hours Shock 50G 11ms Half Sine Wave 6 axis x 3 cycles each axis Moisture Resistance High Temp Storage 85ºC, 360 hours Low Temp Storage -40ºC, 240 hours High Temp/Humidity Operation 60ºC, 90%RH, 360 hours Thermal shock -40 to 60ºC in 30min 200 cycles with continuous operation Electro Static Discharge EN55024:1998 & IEC61000-4-3 Drop Test 75cm to concrete, 3 axis x 2 cycles per corner Parameter Min Typ Max Unit Operating temp (standard product) -40 25 +85 °C Parameter Min Max Unit Storage temp -40 +125 °C

www.ezurio.com © Ezurio Ltd 2005 2714. Physical Dimensions 14.1 Mechanical Dimensions All dimensions in mm. 14.2 Labelling The label contains the Part number and the unique Bluetooth address of the module.

www.ezurio.com © Ezurio Ltd 2005 2814.3 Ordering Information The BISM2 is available with different variants of production firmware. Ordering information is provided below: Part Number Description Firmware Version TRBLU23-00200 BISM2 with integrated ceramic antenna and standard AT firmware Version 4.9.0 TRBLU23-002MP BISM2 with integrated ceramic antenna and standard Multipoint firmware Version 1.4.5.0 TRBLU23-002HC BISM2 with integrated ceramic antenna and standard HCI firmware Version 4.9.0 TRBLU23-00300 BISM2 with SMA jack and standard AT firmware Version 4.9.0 TRBLU23-003MP BISM2 with SMA jack and standard Multipoint firmware Version 1.4.5.0 TRBLU23-003HC BISM2 with SMA jack and standard HCI firmware Version 4.9.0 15. Related Documents • Blu2i AT Reference Manual • Blu2i Multipoint Firmware Reference Manual • BISM Bluetooth Serial Module Quick Start Guide • BISM Bluetooth Module Application Guide • BISM Developer’s Kit User Guide • Bluetooth Core 2.0 Specification – www.bluetooth.org 16. Datasheet Revision History Version Date Changes 0.91 10th March 2005 Initial Draft for customer release.

www.ezurio.com © Ezurio Ltd 2005 2917. Disclaimers EZURIO’S BLUETOOTH PRODUCTS ARE NOT AUTHORISED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE MANAGING DIRECTOR OF EZURIO LTD. The definitions used herein are: a) Life support devices or systems are devices which (1) are intended for surgical implant into the body, or (2) support or sustain life and whose failure to perform when properly used in accordance with the instructions for use provided in the labelling can reasonably be expected to result in a significant injury to the user. b) A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Ezurio does not assume responsibility for use of any of the circuitry described, no circuit patent licenses are implied and Ezurio reserves the right at any time to change without notice said circuitry and specifications. 17.1 Data Sheet Status This data sheet contains data from the Preliminary specification. Supplementary data will be published at a later date. Ezurio Ltd reserve the right to change the specification without notice in order to improve the design and supply the best possible product. Please check with Ezurio Ltd for the most recent data before initiating or completing a design. 17.2 Warranty Ezurio warrants that its products shall conform to Ezurio’s published specifications and remain free from defects in materials and workmanship under normal, proper and intended use for a period of two (2) years from date of purchase, provided that proof of purchase be furnished with any returned equipment. If during the warranty period any component part of the equipment becomes defective by reason of material or workmanship, and Ezurio is immediately notified of such defect, Ezurio shall at its option supply a replacement part or request return of equipment, freight prepaid, to its designated facility for repair. In the event no trouble is found on products returned for repair, Ezurio reserves the right to charge the customer its standard published repair charge. This warranty shall not apply to any products that have been subject to misuse, bending, twisting, neglect, alteration, improper installation, testing or unauthorized repair performed by anyone other than a Ezurio designated repair facility. Any non-warranty repairs or maintenance shall be at Ezurio’s standard rates in effect at the time. This warranty is in lieu of all other warranties, whether expressed, implied, or statutory, including but not limited to, implied warranties or merchantability and fitness for a particular purpose. In no event shall Ezurio be liable, whether in contract, in part, or on any other basis, for any damage sustained by its customers or any other person arising from or related to loss of use, failure or interruption in the operation of any products, or delay in maintenance, or for incidental, consequential, in direct, or special damages or liabilities, or for loss of revenue, loss of business, or other financial loss arising out of or in connection with the sale, lease, maintenance, use, performance, failure, or interruption of these products.

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